The world was intended to have GRAZING/FORAGING ANIMALS on it... the soil doesn't function fully without them. Much of the world is intended to be covered with perennial vegetation. Only way that works is to have a significant portion of our productive land base with those grazing/foraging animals ON THE LAND. Now, if we get rid of the animals, and instead, we "convert" those grazing lands into soybean fields (or whatever other cultivated species you might choose instead... as we've done with far too much of what used to be pastured lands), that inevitably will mean alot MORE bare, tilled soil being exposed to the elements and eroding into our oceans, lakes, rivers, and streams, and alot more synthetic fertilizers, and chemical controls contaminating our water supplies, INCLUDING our ground water. And it's going to mean an acceleration of our already worsening environmental impacts.
No, we NEED animals on the land............... we need MORE animals on the land..................... and we need LESS cultivated row crops. What cultivated crops we do grow we need to transition to more regenerative practices, and livestock on the land is a big part of that. A cow is literally grass/forages converted into concentrated, highly nutritionally dense protein for humans to consume while maintaining a healthier and much more BALANCED, self-regulating, self-organizing, and self-healing ecosystem.